The PostEdit extension delivers feedback after saving of an edit, such as a confirmation message. The E3 team developed it on the basis of A/B testing results of post-edit feedback (data analysis), which showed that a confirmation message and other kinds of feedback can help new editors contribute more.

If you are an editor of a wiki that uses this extension, and you find the edit confirmation that it generates obtrusive or otherwise unwelcome, you can prevent it from appearing by adding the following line to your Common.css user stylesheet: